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填充材料

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A two-step system for chemically bonded ceramic materials, and especially a dental filling material or an implant material.

本发明公开了一种用于化学结合陶瓷材料,和尤其牙科填充材料或植入材料的两步体系。

The results were found as following:(1) The damage value increases more significantly with the increase in PVF before 30% PVF, beyond which the increasing trend becomes gradually gentle.(2)Keeping the interphase strength and PVF unchanged, the damage increase with increasing moisture concentration in a nearly linear relation.(3)The results generated from the FCC model with consideration of the interphase debonding are in good agreement with the experimental data, meanwhile, the FCC model is also capable of predicting the critical load for the damaged and the undamaged dental composite subject too the 3-point flexural test.4 A 3D-fmite element analysis has been successfully exploited to examine the mechanical behavior of the restoration-tooth structure under the polymerization shrinkage and water sorption. It was found:(1) The low stiffness of the composite has the effect to limit the displacement occurring in the remaining tooth tissue. For lower interphase, the cuspal flexures are litter higher. The high interphase modulus acts as a \'shielding effect\' for stress transfer.

得到如下结论:(1)相同的吸湿性,在30%PVF(颗粒体积分数:Particle volume fraction,PVF)前增加PVF,层间脱胶损伤值显著增加;此后损伤值的增加趋于平缓;(2)保持层间强度和PVF不变,层间脱胶损伤随吸湿率的增加而接近线性增加;(3)FCC(面心立方:Face-centred cubic,FCC)模型层间脱胶损伤的预测结果和实验数据基本吻合;同时此模型可以用于预测牙齿填充材料三点弯曲实验的临界载荷。4、建立理想牙齿修复结构,利用有限元方法研究了同时考虑聚合收缩和吸湿膨胀耦合作用下的填充修复材料和粘结界面层材料性能对牙齿修复结构的力学行为的影响,得到如下结论:(1)低弹性模量的牙齿填充修复材料能限制天然牙组织的位移,但天然牙组织的位移与粘结界面层的弹性模量无关。

When the Al-Mg-Zr-Sc welding wire was used as filling material,the grains of welding seam were refined obviously,and the weld joint was greatly strengthened by forming of fine equiaxial grains layer in fusion zone .

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时,焊缝晶粒组织明显细化,熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力,焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa,显著提高了Al-Mg-Sc合金焊接构件的许用强度,因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

The gelling time, thermal stability and mechanical property of this material were studied.

针对目前矿井密闭填充材料在应用中的局限性,采用双溶液混合法制备了新型水凝胶密闭填充材料,研究了该材料胶凝时间影响因素、热稳定性与力学性能等。

Among the various conductive fillers, carbon fibers have been proved to be a good candidate for EMI shielding. However, the electrical resistivity of a carbon fiber is much higher than the metal filler, so it must to use a greater number of carbon fibers in order to achieve the same shielding effect. In recent years, the Electroless plating is the new techniques of surface treatment of carbon fibers used to improve the electrical conductivity of carbon fiber. The copper-coated and nickel-coated carbon fibers have been proved to be a good candidate for EMI shielding.

导电高分子填充材料多使用碳纤维、碳黑及金属粉末,其中碳纤维具有高导电性、低密度及复合材料之补强特性,故本研究碳纤维作为填充材料,将碳纤维经过无电电镀处理,使其表面分别披覆金属镍及铜,增加碳纤维之导电度,混掺於聚丙烯高分子基材中,制成具有电磁波屏蔽功能之高分子复合材料,研究不同高分子成型方式与金属镀层对於碳纤维电学性质及复合材料电磁波屏蔽效益之影响。

Although it is known that small amounts of mercury are vaporizedwhen the fillings are used to chew food,and though Canada,France and Sweden have all placed restrictions on the use of mercury fillings,the FDA has always insisted that amalgams are safe.

所谓的银汞合金或者是填充材料,是用汞和其他材料混合制成的,这种方法从1800年就使用了尽管知道当填充材料用于咀嚼食物时少量的汞能被蒸发和吸入,尽管加拿大、法国和瑞典都将限制使用汞补牙,美国食品药品管理局还是坚持汞合金是安全的

In this study, room-temperature-vulcanized silicone rubber and high-temperature-vulcanized silicone rubber are use to prepare silicone composites. Silicone composites were prepared by adding different proportion of mica, silica or carbon fiber. The inorganic filler was thoroughly dispersed in silicone rubber by two-roll mill. This study focused on the influences of various fillers and additive level on the mechanical, thermal properties, anti-ablation and 90peel strength of the silicone hybrids.

中文摘要本实验分别选用室温熟成型矽橡胶以及高温熟成型矽橡胶作为高分子基材,再加入不同比例各种填充材料,例如:奈米云母、奈米二氧化矽、碳纤维等无机材料,并以双滚筒混炼法来制备矽橡胶复合混成材料,再经由其机械性质、耐烧蚀、黏著试验等量测,来探讨添加不同填充材及其添加量对矽橡胶热物性之影响。

Through the test of lightweight infilled material in multi-ribbed wall structure,a axial compression constitutive model of lightweight infilled material at the(6±2)% water content is proposed.

通过对密肋复合墙体结构常用的轻质填充材料在含水率为(6±2)%时的单轴受压试验,确定了密肋复合墙体结构的轻质填充材料单轴受压本构模型,进而基于统一强度理论,结合抗拉强度及抗剪强度试验,确定了密肋复合墙体结构填充材料的多轴破坏准则,并建立了密肋复合墙体填充材料的弹塑性本构模型。

The results show that, the coefficients of welded joints are both greater than 0.9, but the yield strength of weld joint filled with Al-Mg-Zr-Sc welding wire is greater 100 MPa than that of filled with Al-Mg-Zr welding wire. It indicates that the Al-Mg-Zr-Sc welding wire is the best alteration of filling materials to weld of Al-Mg-Sc alloy.

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时,焊缝晶粒组织明显细化,熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力,焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa,显著提高了Al-Mg-Sc合金焊接构件的许用强度,因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

It is suitable to be used as filling material for oxygen-acetylene gas welding and carbon arc welding, and also for manual braze welding. It is the ideal material for welding of copper alloy, copper, gray cast iron and hard alloy knife and etc.

HS221 JIS ZYCusN 适用于氧-乙炔气焊及碳弧焊时作为填充材料,也可用于钎焊,是铜合金、钢、灰铸铁及硬质合金刀具等焊接材料中较为理想的焊接材料。

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